The Canadian Football League’s Players Association is recommending its members proceed with a strike vote, according to a Sportsnet report.

The collective bargaining agreement between the CFL and its players expires May 30, on the eve of training camp. And while both sides are scheduled to meet later this week, Sportsnet reports that the union is preparing for a potential labour stoppage, believing that after four months of negotiating, the two sides are at an impasse.

“It is the position of your Negotiating Committee that the position of the CFL in relation to almost all matters and their refusal to have the cap in some way connected to revenue are unreasonable,” reads an internal memo written by CFLPA President Scott Flory to all CFL players last week and obtained by Sportsnet. “As a result, we are recommending that the Players proceed with a strike vote.”

The report indicates there are currently several points of contention between the league and the CFLPA. They reportedly disagree on issues surrounding revenue sharing; the amount of the minimum annual player’s salary and that of practice roster players; post-season playoff shares; Grey Cup bonus cheques; and the length of the next CBA.